*Hirofumi Tsukada¹, Junko Takahashi², Zheleznyak Mark ¹, Chizhevskyy Igor ³, Kerieiev Serhii³, Kashparov Valery ⁴ (1. Institute of Environmental Radioactivity, Fukushima University, 2. Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba , 3. Ecocenter, 4. UIAR)

*Yuichi Kuribara¹, Akiko Yamaguchi^1,2, Shogo Higaki², Yoshiyuki Ohara¹, Yoshio Takahashi² (1. JAEA , 2. Univ. of Tokyo)

*Takuya Niida¹, Yoshifumi Wakiyama², Hyoe Takata², Kazuki Fujita³, Keisuke Taniguchi⁴, Alexei Konoplev² (1. Graduate School of Symbiotic Systems Science and Technology , Fukushima University, 2. Institute of Environmental Radioactivity , Fukushima University, 3. Fukushima Prefectural Centre for Environmental Creation, 4. Center for Research in Isotopes and Environmental Dynamics , University of Tsukuba)

*Michio AOYAMA¹ (1. Univ. of Tsukuba)

*Masahiko Machida¹, Ayako Iwata¹, Susumu Yamada¹ (1. JAEA)

*Hikaru Nishiyama¹, Shunsuke Kamida¹, Hiromi Yamazawa¹, Jun Moriizumi¹ (1. Nagoya Univ.)